212400444545915 has 64 divisors (see below), whose sum is σ = 267675503247360. Its totient is φ = 161639258711040.

The previous prime is 212400444545897. The next prime is 212400444545921. The reversal of 212400444545915 is 519545444004212.

It is not a de Polignac number, because 212400444545915 - 2²² = 212400440351611 is a prime.

It is a super-2 number, since 2×212400444545915² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 898060646 + ... + 898297124.

It is an arithmetic number, because the mean of its divisors is an integer number (4182429738240).

Almost surely, 2^{212400444545915} is an apocalyptic number.

212400444545915 is a deficient number, since it is larger than the sum of its proper divisors (55275058701445).

212400444545915 is a wasteful number, since it uses less digits than its factorization.

212400444545915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237132.

The product of its (nonzero) digits is 4608000, while the sum is 50.

The spelling of 212400444545915 in words is "two hundred twelve trillion, four hundred billion, four hundred forty-four million, five hundred forty-five thousand, nine hundred fifteen".